I've used Kryston hooklink materials for years, starting with Silkworm, but after playing around found that I was more comfortable with Merlin, as I felt it to be less buoyant.
Since then I've used Merlin, SuperNova, and Silkworm, and have found no need to change as they work for me, and I have faith in what works without changing.
Do you currently have more than one then, ready to go??
If so, why is this?